A modified Witting procedure makes possible the synthesis of 1-en-4-yne systems; ethynyl group protection with the trimethylsilyl group facilitates iodoacetylene formation for subsequent coupling reactions.
A. G. Fallis, E. R. H. Jones and V. Thaller, J. Chem. Soc. D, 1969, 924 DOI: 10.1039/C29690000924
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